{"product_id":"388-ls3-long-block","title":"388\" LS3 Long Block","description":"\u003cp\u003eThe Smeding 388\" LS3 Long Block is offered in two different configurations! Each package is meticulously assembled with the highest attention to detail and precision. Bearing clearance \u0026amp; ring gaps are measured, verified and set for each application's unique demands. Two different piston volumes are available, please select a horsepower rating and then the volume option will appear. We can also assist with selecting the correct camshaft for your build and goals! Call 210-446-0960 for more information.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e1300hp:\u003c\/strong\u003e\u003cbr\u003eBlock: Smeding Hvy Dty Iron 6-Bolt, 7\/16\" Head Studs, 7\/16\" Main Bolts, 4.125\" Bore\u003cbr\u003eCrankshaft: Smeding 4340 8 Counterweight, Internal Balance, 3.622\" Stroke\u003cbr\u003eRods: Smeding 4340 Forged Steel Hvy Dty H-Beam w\/ ARP2000 Bolts, 6.125\" Length\u003cbr\u003ePistons: \u003cspan\u003eJE 2618 Forged Aluminum, Coated Skirts \u0026amp; 0.170\" Pins\u003c\/span\u003e\u003cbr\u003eRings: Stainless Steel Top, Napier 2nd, Low Tension Oil\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCamshaft: Smeding 5150 Steel Hydraulic Roller\u003cbr\u003eLifters: Gaterman Link-Bar Hydraulic Roller\u003cbr\u003eTiming Set: Performance Single Roller\u003cbr\u003eOil Pump: Melling Oil Pump\u003cbr\u003eCylinder Heads: Smeding 275cc CNC Ported 11\u003cstrong\u003e°\u003c\/strong\u003e 6 Bolt LS3 Heads\u003cbr\u003eHead Gaskets: Cometic MLX 5-Layer Head Gaskets\u003cbr\u003eHead Fasteners: 6 Bolt ARP Head Stud Kit - 7\/16\"\u003cbr\u003ePushrods: Manley Chromoly Swedged End Pushrods\u003cbr\u003eRocker Arms: GM LS3 w\/ Upgraded Trunnions\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e2000hp:\u003c\/strong\u003e\u003cbr\u003eBlock: Smeding Hvy Dty Iron 6-Bolt, 1\/2\" Head Studs, 7\/16\" ARP Main Studs, 4.125\" Bore\u003cbr\u003eCrankshaft: Smeding 4340 8 Counterweight, Internal Balance, 3.622\" Stroke\u003cbr\u003eRods: Smeding 300m Billet Steel Hvy Dty I-Beam w\/ ARP2000 Bolts, 6.125\" Length\u003cbr\u003ePistons: JE Ultra 2618 Forged Aluminum, Coated Skirts, Gold Thermal Barrier \u0026amp; 0.200\" Pins\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eRings: Stainless Steel Top, Napier 2nd, Std Tension Oil, 1.2\/1.5\/3.0\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCamshaft: Smeding 5150 Steel Hydraulic Roller\u003cbr\u003eLifters: Gaterman Link-Bar Hydraulic Roller\u003cbr\u003eTiming Set: Performance Single Roller\u003cbr\u003eOil Pump: Melling Oil Pump\u003cbr\u003eCylinder Heads: Smeding 275cc CNC Ported 11\u003cstrong\u003e°\u003c\/strong\u003e 6 Bolt LS3 Heads\u003cbr\u003eHead Gaskets: Cometic MLX 5-Layer Head Gaskets\u003cbr\u003eHead Fasteners: 6 Bolt ARP Head Stud Kit - 1\/2\"\u003cbr\u003ePushrods: Manley Chromoly Swedged End Pushrods\u003cbr\u003eRocker Arms: GM LS3 w\/ Upgraded Trunnions\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFinal assembly \u0026amp; tuning of this partial engine must be completed by an experienced engine assembler\/builder. Smeding Performance is not responsible for damaged caused by user installed parts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePower Adder engines carry a 1yr workmanship guarantee.\u003c\/span\u003e\u003c\/p\u003e","brand":"Smeding Performance","offers":[{"title":"Default Title","offer_id":41700739776570,"sku":"388LS3LB","price":15900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0099\/5046\/1988\/files\/NEW-LongBlock-9-24-26-BLACK.jpg?v=1790265199","url":"https:\/\/smedingperformance.com\/products\/388-ls3-long-block","provider":"Smeding Performance","version":"1.0","type":"link"}